Abstract: A system and method for preparing epoxy chloropropane is provided in that by coupling three stages of high gravity reactors, the product epoxy chloropropane and water vapor are distilled from a reaction system in form of an azeotrope by adopting a water vapor steam stripping method. Further, by combining the azeotrope with the multiples stages of high gravity reactors, the gas phase mass transfer and the liquid phase mass transfer of the azeotrope are improved aiming at the features of the azeotrope in the reaction system, thus making the overall conversion rate higher. In addition, by combining steam stripping and high gravity, dichloropropanol and alkali solution are rapidly mixed for mass transfer, and the product epoxy chloropropane is rapidly distilled from the reaction system in the form of the azeotrope, such that the reaction proceeds continuously towards the direction of producing epoxy chloropropane, thus significantly improving the conversion rate.

Abstract: The present invention relates to a Z-type heterojunction photoanode film used for the photocathode protection of a reinforcing bar, the preparation method thereof and a method for the corrosion inhibition of mental materials from concrete structures in marine engineering by using the Z-type heterojunction photoanode film used for the photocathode protection of a reinforcing bar. The preparation method includes steps of preparing Fe2O3 on the conducting surface of a clean conductive substrate through the hydrothermal process, preparing Fe2O3-PANI composite photoanode film by depositing polyaniline on the surface of Fe2O3 through the electrochemical synthesis and preparing Ru-Fe2O3-PANI composite photoanode film on the surface of the Fe2O3-PANI composite photoanode film through the in situ chemical reduction method.

Abstract: The present invention relates to a Z-type heterojunction photoanode film used for the photocathode protection of a reinforcing bar, the preparation method thereof and a method for the corrosion inhibition of mental materials from concrete structures in marine engineering by using the Z-type heterojunction photoanode film used for the photocathode protection of a reinforcing bar. The preparation method includes steps of preparing Fe2O3 on the conducting surface of a clean conductive substrate through the hydrothermal process, preparing Fe2O3-PANI composite photoanode film by depositing polyaniline on the surface of Fe2O3 through the electrochemical synthesis and preparing Ru-Fe2O3-PANI composite photoanode film on the surface of the Fe2O3-PANI composite photoanode film through the in situ chemical reduction method.